Reply To: Pcb board design › Forums › dropController PCBs › Pcb board design › Reply To: Pcb board design 2019-03-30 at 16:33 #2710 Spiro ChekanoGuest Just finish my version of the PBC i did a little changes. I replace 4N25 whit PC817 remove the 2 external triggers i change the buck converter to mini 360 buck converter and valves RCA connectors to simple screw terminals dimension are 98x98mm